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PATENTED AUG. 11, 1908. W. MULLER.

vWRENCH. APPLIGATION FILED JAN. a1, 1808.

WILLIAM MULLER, OF PITTSBURGQPENNSYLVANIA.

WRENCH.

Specification of Letters Patent.

Patented Aug. 11, 1908.

Application led January 31, 1908. Serial No. 413,545.

To all whom it may concern:

Be it known that I, WILLIAM MULLER, a citizen of the United States ofAmerica, re-

siding at Pittsburg, in the county of Alle- This invention relates towrenches, and' the objects of my invention are, first, to provide aystrong and durable nut and pipe wrench; and second to provide a wrenchwherein positive and reliable means are embodied in a movablejaw forholding said jaw in a fixed position with relation to said wrench. Iattain these objects by employing a double toothed shank upon which ajaw is slidably mounted. The jaw is provided with two toothed grippingmembers, which are actuated through the medium of screws, these screwsfirmly holding the gripping members in engagement with the shank, andpreventing the jaw from moving when the wrench is being used upon anobject. The movable jaw is also provided with a tilting pipe gri pingjaw face.

The c etail construction entering into my.

invention will be presently described and then specifically pointed outin the appended claims.

In the drawings: Figure l is an elevation of a wrench constructed inaccordane with my invention, Fig. 2 is a similar view of a portion of awrench illustrating the movable jaw thereof in section, Fig. 3 is ahorizontal sectional view taken on the line -x of Fig. 2, looking in thedirection of the arrow of said figure, and F ig. 4 is aperspective viewof the tilting pipe gripping jaw face.

In the accompanying drawings, l designates a shank having teeth 2 uponits front and rear edges. This shank is provided with a iiXed jaw 3having a straight gripping surface 4 and an angular grip ing surface 5,the former being for flat surfaces, while the latter is used for pipesand. objects having rounded surfaces. 'Ihe shank 1 is provided with adetachable handle 6 of a conventional form.

A Slidably mounted upon the shank l is a movable j aw. frame 7 having afiat gripping surface S adapted to cooperate with the fiat grippingsurface 4. Pivotally Inounted in the opposite edge of the jaw frame 7 bya pinV 9 is a bifurcated pipe gripping jaw face l0, said aw face havingteeth ll for gripping rounded surfaces. These teeth project beyond theplane of the face Siand coact with the gripping face 5 of the jaw 3. yrl`he object of the bifurcation in connection withthis jaw will bepresently described.

The jaw frame 7 is provided with a central opening l2 for the shank l,and the upper and lower edges of said jaw frame adjacent to said openingare recessed, as at 13. Movably mounted in the opening l2 and engagingthe front and rear edges of the shank l are gripping members 14, saidmembers being provided with teeth l5 for engaging the teeth 2 of theshank l. The upper and lower ends of the members are formed with rightangular extensions I6 adapted to engage in the recesses 13, while one ofsaid eX- tensions protrudes into the bifurcation of the tilting grippingjaw face l0.

Adjustably mounted in the front and rear edges of the jaw frame 7 arescrews 17 for engaging the members I4 and holding said members inengagement with the shank l. To adjust the movable jaw, the screws 17are slackened so that the operator, holding the jaw frame 7 in one hand,may, by forcing the shank l in either direction with the other hand,increase or decrease the space between the gripping faces 4 and 8 and 5and ll, 4and when the desired adjustment has been obtained, screws 17will tighten and the jaw frame 7 will be held in adjusted position.

The construction of my wrench permits of an object being gripped andfirmly held, it being impossible for the jaw frame 7 to slip after themembers 14 have been placed in engagement with the double toothed shankl.

It is apparent that my wrench serves functionally as an ordinary monkeywrench and a pipe wrench.

Having now described my invention what I claim as new, is

In a wrench, a shank carrying a fixed aw and provided on opposite sideswith teeth, a movable jaw having a central opening to receive the shankand having recesses at each end thereof, toothed gripping members saidgripping members for holding them in able jaw to engage the oppositetoothed surengagement with the teeth of the shank. 10 'faces of saidshank, the said gripping-mem- In testimony whereof I affix my signaturebers being of the same length as the j aw and i in the presence of twowitnesses.

mounted in the central opening in said movprovided at each end withangular eXten- WILLIAM MULLER. sions engaging in said recesses at theends of Witnesses: the movable jaw, and securing screws in op- Y MAX H.SRoLoVITZ,

posite faces ol said movable jaw engaging y HARRY C. TAUFEL.

